Process for producing a cast resin coil

US5588201A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Friedrich Alber · Köngen, DE
• Rudolf Dedelmahr · Neckartenzlingen, DE
• Winfried Jungnitz · Uerdingen, DE
• Hans Schott · Dinslaken, DE
• Heinz Sesterheim · Tauberbischofsheim, DE
• Siegfried Weiss · Schweinfurt, DE

Key dates

• Filing date: Sep 21, 1993
• Grant date: Dec 31, 1996
• Expiry date: Sep 21, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49073
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

For the production of a cast resin coil consisting of a plurality of axially superimposed flat coils, it is proposed that the corresponding flat coils be first of all produced by winding a first inner partial winding and a second outer partial winding with the interposition of individual spacer members by which sector-shaped intervening spaces are formed. The individual flat coils are then placed together axially and oriented so that their intervening spaces coincide, thus forming axial cooling channels. Moldings are inserted into each of said channels. This is followed by the encapsulation of the assembled flat coils. After the curing of the casting resin, the moldings are removed from the cooling channels. A cast resin coil produced in this manner has an impregnable layer of material, preferably in the region of the cooling channels by which the wall thickness of the cooling channels is predetermined in relation to the corresponding strip conductors.